London suffered widespread damage during World War II as a result of aerial bombardment, which devastated the docks and many industrial, residential, and commercial districts, including the historic heart of the City. About 30,000 Londoners died because of enemy action in the skies above the capital, and a further 50,000 were injured. The end of hostilities brought a return of evacuees, and reconstruction of the city began at once, even though building materials were in desperately short supply. During the war the Greater London Plan (1944) had been prepared as a blueprint for reconstruction and also for relocating some Londoners and their jobs in new towns around the capital and in “assisted areas” in parts of the English provinces. Construction of new housing was discouraged and tightly controlled in a Green Belt around London, and the subsequent dispersed growth of the metropolis occurred in more distant sections of southeastern England. The New Towns Act (1946) gave rise to eight new settlements outside the metropolis. Passage of town and country planning acts, notably in 1947 and 1968, gave municipal authorities unprecedented powers of land purchase and control over development in London. The Festival of Britain (1951) proclaimed national recovery and produced the Royal Festival Hall on the south bank of the Thames, as well as the Lansbury Estate (a redevelopment area in Poplar). However, severe air pollution from coal-burning domestic hearths and industrial chimneys contributed to the Great Smog of 1952, which played a part in the death of 4,000 Londoners.

During the subsequent quarter century there was vast investment in slum clearance, construction of new houses and apartments, and improvement of services. Urban planning was more widely accepted, together with a broad policy to divert a share of employment and housing to localities beyond London’s continuously built-up area. As a result, the number of residents in Greater London contracted from about 8,193,000 in 1951 to about 6,600,000 in 1991; however, growth continued in other parts of the southeast.

The port of London, which had been devastated during World War II, was restored in the 1950s. However, between 1968 and 1981 the city’s docks were closed to traffic because of their small size, difficult labour relations, poor management, and powerful competition from major ports in continental Europe, especially Europoort in Rotterdam, Netherlands. During the 1980s the London Docklands Development Corporation encouraged major changes in Docklands, including the construction of new housing and a large number of new offices (notably at Canary Wharf). London had experienced substantial deindustrialization by this time, with old industries that had been installed in Victorian times collapsing and many newer industries, dating from the interwar years and located along radiating main roads laid out in those decades, sharing the same fate. London’s economy had become increasingly geared to financial transactions and many other kinds of service activity. These sectors of the economy were strengthened by legislative changes in the mid-1980s affecting financial dealings. In consequence, the townscape of many parts of the City and the West End was transformed as vast new office complexes were constructed. Notable examples are Broadgate, on the site of the former Broad Street station; London Bridge City, alongside the Thames; and the Lloyd’s building. In addition, London’s airports at Heathrow and Gatwick were expanded, a major new airport opened at Stansted (30 miles [50 km] north of the City), and a small airport for flights to western Europe began operating in Docklands. Completion of the M25 orbital motorway enabled vehicles to pass around the capital rather than move through it. However, road congestion remained a major problem, with even the M25 seriously overloaded with traffic.

Notable construction projects at the turn of the 21st century included the new British Library, the expansion of Underground lines through Docklands, and the innovative Millennium Bridge, designed for pedestrian traffic. Spanning the Thames to connect Tate Modern with the City at St. Paul’s Cathedral, the bridge opened briefly in 2000 but was closed when it swayed unexpectedly, prompting a series of engineering studies. It reopened in 2002 after modifications to stabilize it. Downriver at Greenwich the Millennium Dome, a controversial project along the Thames in the East End, offered a variety of exhibitions during 2000.

On July 6, 2005, London was selected as host of the 2012 Olympic Games. The following day the city suffered a series of coordinated terrorist attacks: three bombs went off on Underground trains, and another destroyed a double-decker bus. The attacks, which killed 52 people and injured some 700 others, were carried out by four young men characterized as “ordinary British citizens” in a subsequent investigation.

In August 2011 a wave of riots swept the city after police shot and killed a 29-year-old man who was suspected of involvement with gun-related crimes. What began as a peaceful gathering at the police station in the Tottenham neighbourhood soon spiraled into violence. Over the following days, dozens of fires were set across London, and stores were vandalized and looted. Although hundreds of rioters were arrested, police were unable to contain the violence, which soon spread to cities such as Birmingham and Liverpool. Prime Minister David Cameron called Parliament into an emergency session and ordered thousands of additional police officers into the streets.

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